Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
cua thong » cua thuong, cua khong, suat thong
cong sang » cong san, cong lang, cong vang
sang than » cang thang, dang thanh, sang tao
cua tong » cua cong, cua dong, cua nong
than ma » than man, than va, khan ma

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu sach)) - hanh tranh ((cua thong) OR (cua tong)) cong sang than ma~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hanh tranh ((cua thong) OR (cua tong)) cong sang than ma*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sach)) - hanh tranh ((cua thong) OR (cua tong)) cong sang than ma*".